In four years, Ramona's age in years will be twice Charlie's age in ye

Question

In four years, Ramona's age in years will be twice Charlie's age in years.

In the table, select values that, according to the given information, could be Ramona's and Charlie’s present ages in years. Make only two selections, one in each column.

joaoalencar023 · Accepted Answer

Solve by:

R + 4 = 2(C+4)

R = 2C + 4

Test different scenarios
If Ramona is 12, Charlie is 4;
If Ramona is 14, Charlie is 5;
If Ramona is 20, Charlie is 8;
If Ramona is 24, Charlie is 10;
If Ramona is 28, Charlie is 12; BINGO.

Thers's the answer: 28 and 12.

Focus7 · Answer

Is it r = 28 and c = 12?

Posted from my mobile device

lawyeroffduty · Answer

yes

bdefeo · Answer

There should be a clarification as to whether it is Charlies current age or his age in 4 years

Bismuth83 · Answer

1. The problem asks us to find  Ramona's and Charlie’s   present ages   in years. Denote them as  R  and  C , respectively.

2. In 4 years their ages will be R + 4 and C + 4.

3. From the equation we have: R + 4 = 2(C + 4) ->   R = 2C + 4  .

4. With no more information, we need to go through all variants. One thing to notice is that R is slightly larger than 2C. That means we can cross out C = 2, because it's too small. In addition, C = 20, 24, 28 can also be immediately crossed out since R will be too large.

5.  
  Case#1 : C = 12. Then,   R = 2*12 + 4 = 28  , which   works  .

Case#2 : C = 14. Then,   R = 2*14 + 4 = 32  , which   doesn't work  .

6. The answer is   R = 28 and C = 12  .

bb · Answer

bdefeo ,

The setup says " In four years" at the beginning, so it should be taken that everything after that statement is in 4 years. I think we can assume/resolve that. 
 The answers however are in present time.

Dbrunik · Answer

pretty simple problem
r+4=2(c+4)

r=2c+4

test answers. just plug in the values for c and see if theres an answer that equals r.

bumpbot · Answer

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In four years, Ramona's age in years will be twice Charlie's age in ye

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In four years, Ramona's age in years will be twice Charlie's age in ye

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